If you think it looks insane on the outside, you should have a look at the engine. This 1977 320 Turbo used a massively turbocharged 2.0-liter Formula 2 M12 powerplant. BMW figured these things to be putting out 650 hp, pretty outrageous for a four-cylinder, even today. These engines spurred on the development of BMW's turbocharged F1 cars of the 1980s, and the technological arms race that ensued is legendary.

Campaigned by Team McLaren in the IMSA Camel GT Series, driver David Hobbs took the 320 Turbo to seven race wins in 1977 and 1978, including victories at Laguna Seca and Mid-Ohio, presenting a serious challenge to the Porsche 935s that would go on to dominate the series.

Over the years, we've shot many historic race cars. Some are extra special. Magnetic. Usually, it takes a car that you celebrated as a kid to bring you back to that mental place. For Marc Urbano, this is one of those cars.

"My dad took the photo. It was shot July 15, 1979, at the Winston GT Mid-Ohio 250," says Urbano. "I remember being in awe, and I still am, of the huge fenders and massive wing and front air dam/splitter. It was such a crazy departure from a stock 320i. It was also a turbo and I loved turbo cars. The BMW was a bit of an underdog back then [against a sea of Porsche 935s], so rooting for them was fun."

Marc and the 320 Turbo were reunited at Daytona this year and then again for this photo session at Bobby Rahal's shop in Ohio. Sometimes it's good to meet your heroes.